Maybe he's just a very private guy ...
And I quote from his own lips on
KCRW.com
AS: Yeah, I had this girlfriend awhile ago, many years ago, and it was a very passionate relationship. I was very much in love with this girl, but after a few months we both realized we weren't good for each other. But it was one of those relationships that we didn't make each other happy, but every time we broke up, we ended up back together and that went on for almost 3 years. I don't know if you've experienced that, but it just killed me. It was really, really tough. I just tried to move on and so did she but we just couldn't. I want to dedicate this song to her and I hope she found happiness somewhere out there.
AS: Every time after a fight I would just put on my big headphones and I would crank up the volume and go Pete Shelley freakin' gets it. In a way she will always be a part of me, but I don't have to listen to Buzzcocks and cry every day and night any more. I can actually listen to it now and enjoy it because it's a great song.
Hell, we even know when, where and how he lost his virginity and the guy can't just say something like, "I don't want to discuss my private life but KB's a great girl." Whatever.